Window ventilator



May 8, 1934. T. JOHNSON WINDOW VENTILATOR Filed July 22, 1930 3 Sheets-Sheet 1 l X .1 Il): l 1f /l ,l 1/ 1 1 l 1 1 A /1 /1 11 /1 /1 fl. y 11. l, X r

May 8, 1934. T. JoHNsoN WINDOW VENTILATOR 3 Sheets-Sheet 2 Filed July 22, 1950 May 8, 1934; T. JOHNSON wINDow VENTILATOR Filed July 22, 1930 3 Sheets-Sheet 3 Patented May i934 Theodore .iohnsom Erie, assigner to Johnson vMetal Products Co., Erie, Fa.

Application iniy 22, lii, Serial No. 469,860

il Claims.

This -invention relates to window ventilators, and it is an object of the invention to provide a device of this kind adapted to be employed in connection with a window sash and which is constructed in a manner whereby the whole unit can be readily applied.

The invention also has for an object to provide a device of' this kind constructed in a manner whereby passage therethrough 'of foreign matter is substantially eliminated together with means whereby the passage of air therethrough may be regulated from the inside.

Another object ofthe invention is to provide a device of this kind adapted to be used in connection with metal windows and which serves to prevent moisture from accumulating on the inside of such window.

A n additional object oi the invention is to provide a ventilator particularly advantageous for use with Casement windows permitting admission of fresh air through the window opening while vthe window sash remains locked.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved window ventilator whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my inventionwill hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein:-

Figure 1 is a vertical sectional view taken through 'a ventilator constructed in accordance with an embodiment of my invention and in applied position;

Figure 2 is from without illustrating my applied;

Figure 3 is a view in elevation from within of the ventilator in applied position;

Fgure 4 is a vertical sectional View taken through a ventilator constructed in accordance with another embodiment of my invention and in applied position;

Figure 5 is a fragmentary elevational view from without of the ventilator as illustrated in Figure Zl;

a fragmentary view in elevation improved ventilator Figure 6 is'a fragmentary elevational view,

from within of the ventilator as illustrated in Figure 4.

ln the embodiment of the invention as illustrated in Figures 1 to 3, I disclose a ventilator particularly designed for use in connection with an out-swinging sash of a metal easement window and wherein it is to be noted that the ventilator is carried as a unit lby the sash and within the sight opening thereof.

As disclosed in this embodiment of my invention, the ventilator is mounted upon the lower member of the sash between a side member or stile thereof and an adjacent mullion although if desired the ventilator may be otherwise positioned, as upon a horizontal dividing or transom bar, or between adjacent mullions. Ihave found it advantageous, however, to position the ventilator at a lower corner portion of the easement sash.

A s disclosed in this embodiment of my invention, the ventilator comprises a frame F, preferably oblong and of desired dimensions, and which is snugly engaged upon the lower bar of the sash frame S between the vertical member or stile 1 thereof and an adjacent mullion 2. The inner marginal portion oi the lower member 3 of the frame F is defined by an upstanding plate 4 extending from end to end of the frame while the top member 5 of the frame has its outer marginal portion defined by a depending plate 6 extending from end to end of the frame. These plates 4 and 6 have their inner ends terminating in spaced relation one with respect to the other and the said free longitudinal marginal portions of the plates 4 and 6 are continued respectively by the inwardly inclined plate extensions 7 and 8.

The outer longitudinal marginal portion of the lower member 3 of the frame is defined by an upwardly disposed and inwardly inclined flange 9 while the inner marginal portion of the top member 5 of the frame F is defined by a depending and inwardly inclined flange 1G.

The outer open face of the frame F., or that open portion below 'the depending plate 6, is adapted to be closed by a plate l1 provided therealong with a desired number of louvres 12 and which has its longitudinal marginal portions reverted, as at 14, to provide a clamping means for the marginal portions of a mesh fabric, preferably wire, dened over the inner face of the plate 1l and which serves as a means to prevent passage of foreign matter through lthe applied plate 11 into the room or for collection within the frame F.

The longitudinal marginal p'brtions of this plate 11 are also provided with the inwardly and outwardly inclined anges 15 terminating in the outwardlyr disposed lips 16. When the plate 11 is forced into applied position the flanges 15 have close contact with the plate extension 8 and iiange 9 and the lips 16 spring over the longitudinal margins of said plate extension 8 and harige 9 whereby the plate 11 is effectively maintained in applied position.

A plate 17 is adapted to be disposed over the inner opening of the frame, or that open portion above the plate 4. The longitudinal marginal portions of this plate 17 are reverted, as at 18, said reverted portions being continued by the inwardly disposed inclined anges 19. These flanges 19 provide track or guideways for the slide plate 20. The slide plate 20 is provided therealong with a series of openings 21 over which is disposed a ne mesh fabric 22 to prevent passage of foreign matter through said openings. The slide plate 20 is adapted to be moved endwise to adjust the positions of the openings 21 with respect to the openings 23 provided in the plate 17 whereby the circulation of air through the applied ventilator maybe regulated or controlled asdesired.

The plate 20 has extending therefrom an operating member 24 which is directed through an elongated slot 25. suitably positioned in the plate 17 It is believed to be clearly apparent that the passage of air through the applied ventilator may be regulated during the period the window sash is fully closed and that such adjustment of air is to aiord not only effective ventilation within a room but to'substantially equalize the temperature immediately adjacent the inner side of the closed sash to that at the outer side so that the sash together with the lights therein will b e maintained dry at all times. In other words, the ventilator offsets the disadvantages -resulting in the temperature on the outside of the closed sash being lower than the temperature immediately adjacent the inner face of the closed sash and which addition will result in the collection of moisture and which disadvantage my improved ventilator eliminates.

The plate 17 is also adapted to be forced into applied or working position and when so applied the anges 19 thereof have close contact with the plate extension 7 of the lower plate 4 and the flange 10, said flanges 19 being provided along their free longitudinal margins with the lips 25 which spring over the free marginal edges of said plate extension 7 and flange 10, thus effectively holdingthe plate 17 in working position.

The plate 17 is of such transverse dimension as to have one marginal portion extending a distance beyond the upper member 5 of the frame F to afford a stop or abutment for a window light or pane 26 while the lower longitudinal marginal portion of said applied plate 17 overlaps the adjacent inner face of the lower member 3 of the In the embodiment of my invention as illustrated in Figures 4, 5 and 6 the lower'rail or member of the window sash S' is provided therethrough with an elongated opening 27 in which is adapted to be snugly fitted the frame F', the longitudinal marginal portions of the top members of which being deined by the inwardly inclined flanges 28 with which are adapted to have close contact the correspondingly inclined ilanges 29 carried by the outer plate 30 and the inner plate 31. These flanges 29 at their outer longitudinal margins are provided with the lips 32 which `spring over the free longitudinal edges of the flanges 28 whereby the plates 30 and 31 are elec-l tively locked or held in applied or working position. The plates 30 and 3l are of such size when applied to extend beyond the margins of the opening 27 and to lap the adjacent portions of the sash member or rail. Each of the end extensions may be anchored to a stile or vertical member of the window frame by screws 33 or the like. The outer plate 30 is provided therealong with the louvres 34 over which is arranged a ine screen fabric 35 to prevent passage therethrough of foreign matter.

The plate 31 is provided therealong with a series of openings 36 with which is adapted to be brought into register the openings 37 of a slide plate 38 slidably supported by the plate 31. This slide plate 38 carries a ne mesh fabric 39 extending over the openings of said plate to prevent passage of foreign matter through such openings. The plate 38 also carries an operating member 40 disposed through a suitably positioned slot 41 in the plate 31. The iiow of air through the ventilator may be readily regulated or controlled from the inside upon requisite manipulation of the slide plate 38 through the medium of the operating member 40.

While at all times it may not be necessary, I iind it of advantage to position within the frame F' and extending lengthwise thereof the baiile plates 43, said plates being spaced apart any desired distance and disposed transversely upon such incline o1' angle to break up the travel of an air current so as to permit no draft to enter a room. X

From the foregoing description it is thought to be obvious that a window ventilator constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facilityfwith which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modiiication without departing from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:-

1. A ventilator comprising a frame having opposed members, said members being provided with inwardly inclined portions, side plates having inclined portions for coaction with the inclined portions of the frame, said inclined portions of the plates having lips adapted to spring over the free edges of the inclined portions of the frame to hold the plates in applied position, said plates being provided with openings.

2. A ventilator comprising a frame having opposed members, said members being provided with inwardly inclined portions, side plates having inclined portions for coaction with the inclined portions of the frame, said inclined portions of the plateshaving lips adapted to spring over the free edges of the inclined portions of the frame to hold the plates in applied position, said plates being provided with openings, a slide plate coacting with the openings of one of the side plates, the inclined portions of said side plate serving as a trackway for the slide plate, Said slide plate having openings for coaction with the openings in the associated side plate.

3. A ventilator comprising a frame having opposed members, said members being provided with inwardly directed portions, a side plate havmensen olinecl portions of the frame, seid inclined portions of the plates having lips'adapteci to spring over the free edges of the inclined portions of the frame to hold the plates in applied position, seid plates being .provided with openings, seid plates having portions extending outwardly beyond the inclined portions.

TEEODORE JOHNSON. 

